نتایج جستجو برای: excitation processes

تعداد نتایج: 586657  

Journal: :Physical review. A, Atomic, molecular, and optical physics 1996
Macías Martín Riera Sanz

We study 1s→2s(2p) excitation of hydrogen as a function of the nuclear charge of the projectile, ZP , for a fixed impact velocity, v51.3 a.u., for which electron excitation, capture, and ionization are competitive processes. For this purpose, we have performed large ab initio close-coupling calculations using a molecular basis in the framework of the impact-parameter method. Excitation probabil...

1998
A. D. Bacher S. E. Vigdor

We calculate differential cross sections and the spin transfer coefficient D nn in the p+α → p+α+π 0 reaction for proton bombarding energies from 1 to 10 GeV and π 0 − p invariant masses spanning the region of the N * (1440) Roper resonance. Two processes – ∆ excitation in the α-particle and Roper excitation in the proton – are included in an effective reaction model which was shown previously ...

2001
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

2001
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

Journal: :مجله علوم اعصاب شفای خاتم 0
sara abdolahi a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran b. department of biotechnology, school of veterinary science, shiraz university, shiraz, iran maryam borhani-haghighi a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran b. department of anatomy, tehran university of medical science, tehran, iran hassan hosseini ravandi a.shefa neuroscience research center, khatam alanbia hospital, tehran, iran

spinal cord injury (sci)-induced systemic inflammatory response affects multiple organs outside the spi­nal cord. treatment options for such complications are lacking. valproic acid (vpa) is a histone deacetylase inhibitor, acting directly at the level of gene transcription by inhibiting histone deacetylation and making transcription sites more accessible. acetylation of histones is critical to...

2003
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

2001
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

Journal: :Human brain mapping 2014
Timm B Poeppl Berthold Langguth Angela R Laird Simon B Eickhoff

Reproductive behavior is mandatory for conservation of species and mediated by a state of sexual arousal (SA), involving both complex mental processes and bodily reactions. An early neurobehavioral model of SA proposes cognitive, emotional, motivational, and autonomic components. In a comprehensive quantitative meta-analysis on previous neuroimaging findings, we provide here evidence for distin...

2001
F. Kleefeld

The present status of the theoretical description of Initial (ISI) and Final State Interactions (FSI) in nucleon induced exclusive meson production processes close to threshold is reviewed. Shortcomings are addressed and new perspectives given. It is quite surprising, that the discussion of the theoretical description of ISI and FSI in nuclear and particle collision/production processes is gain...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1996
C Xu W Zipfel J B Shear R M Williams W W Webb

Intrinsic, three-dimensionally resolved, microscopic imaging of dynamical structures and biochemical processes in living preparations has been realized by nonlinear laser scanning fluorescence microscopy. The search for useful two-photon and three-photon excitation spectra, motivated by the emergence of nonlinear microscopy as a powerful biophysical instrument, has now discovered a virtual arti...

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